Well i blew the factory rear fill in my moms xterra i though it was a cheap sub but it wasnt. She has factory 6.5's and tweets in front doors then the 6.5's in back i blew its a six speaker system that has absolutely no bass now, she just wants something to satisfy her nothing fancy. What would you guys reccomend? she doesnt like heavy bass, she just wants something to make up for what i blew. crutchfield said they are 6.5's so anything decent preferrably that i could possibly find local would be great. i can also use 5 1/4"